Structure and manufacturing method for motor and stator
First Claim
1. A motor having a lap winding structure in which inserts of two different coils are installed side by side in one slot of a stator in a circumferential direction of the stator;
- andwherein said stator has semi-closed type slots, each slot being formed with a single protuberance at its inlet end extending from one side towards a center line thereof, the single protuberance of at least one slot being oriented in a different direction from a single protuberance of at least one other slot.
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Accused Products
Abstract
A motor having a lap winding structure and a manufacturing method therefor, wherein inserts of two different coils are installed side by side in one slot of a stator in a circumferential direction of the stator. All the coils are inserted in slots in succession. Further, a stator having semi-closed type slots formed by protuberances oriented in different directions, is used to control a reduction in the magnetic flux at the inlet of a slot and also to prevent coils from coming off. In a motor having coils of a plurality of phases for generating a rotating magnetic field at a stator, the contact portion of the coil of the desired phase among the coils of the plurality of phases and a portion rising from a slot toward the axis of a core are aligned and disposed to have a shape which prevents them from interferring with end portions of the coils of other phases.
60 Citations
7 Claims
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1. A motor having a lap winding structure in which inserts of two different coils are installed side by side in one slot of a stator in a circumferential direction of the stator;
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wherein said stator has semi-closed type slots, each slot being formed with a single protuberance at its inlet end extending from one side towards a center line thereof, the single protuberance of at least one slot being oriented in a different direction from a single protuberance of at least one other slot. - View Dependent Claims (2)
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- 3. A motor having coils of a plurality of phases generating a rotating magnetic field at a stator, wherein an inner side of a contact portion of a coil of a phase among the coils of the plurality of phases, the contact portion being located at the outermost position in a radial direction, is positioned outside slots in which the coils of other phases are inserted, thereby preventing the contact portion from interfering with end portions of coils of other phases.
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5. A manufacturing method for a stator which includes:
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a winding step for forming a coil by aligned winding;
a coil forming step for compression-forming paired coil sides, which are inserted in paired slots, in a coil formed in the winding step, into rectangular shapes to deform a contact portion approximately to an angle at which it is spanned over the paired slots; and
an installing step for positioning the coil, which has been formed in the coil forming step, on the inner periphery of a core and for installing the coil by inserting the paired coil sides of the coil in corresponding slots in sequence.
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6. A manufacturing method for a stator which includes:
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a winding step for forming a U coil by aligned winding, for forming a V coil by aligned winding, and for forming a W coil by aligned winding;
a coil forming step for compression-forming paired coil sides, which are to be inserted in paired slots, in each of the U coil, the V coil., and the W coil formed in the winding step, into rectangular shapes and for deforming the contact portions thereof approximately to angles at which they are spanned over the paired slots; and
an installing step for positioning each of the U coil, the V coil, and the W coil, which have been formed in the coil forming step, on the inner periphery of a core and for installing the coils by inserting the paired coil sides of each coil in corresponding slots in sequence.
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Specification